BOOTY CALL: Phillippe, Lovato Hook Up!

He's twice her age, but when has that ever mattered in Hollywood? Ryan Phillippe, 36, is apparently hooking up with troubled Disney starlet Demi Lovato, 18. The two have been secretly dating for months, a source tells E!, adding that "it was really hot and heavy" until Phillippe's daughter with an ex-girlfriend was born two weeks ago, which "kind of threw [Lovato] for a loop." Another insider tells Us the two "were just hooking up," not engaging in anything "serious." TMI alert: Phillippe's eldest, daughter Ava, is just seven years younger than Lovato.